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There is really no evidence that marijuana works for chronic pain
is this what you are asking?
The use of cannabis and cannabinoids for chronic pain is controversial. Two systematic reviews and one meta-analysis evaluating randomized trials of cannabis and cannabinoids have found some evidence of efficacy for chronic pain. However, both reviews and the meta-analysis included trials in multiple different patient populations. The included trials in the systematic reviews also used various formulations of cannabis and cannabinoids. One review found 28 randomized trials in patients with chronic pain from various etiologies, including six trials in patients with chronic pain and six in patients with neuropathic pain. The review found that several of the trials had positive results suggesting that cannabis or cannabinoids may be efficacious for these conditions. The second review evaluated 79 trials, including 28 trials in patients with chronic pain. Most of the included trials evaluated patients with neuropathic pain (12 trials). This review concluded that there was moderate-quality evidence to support the use of cannabinoids for the treatment of chronic pain.
Spinal cord stimulation — Spinal cord stimulation (SCS), a spinal neuromodulation analgesic system, is an option for chronic neuropathic pain which can arise after nerve or nervous system injury. SCS is a minimally invasive and reversible treatment option which can be permanently implanted after an appropriately conducted temporary screening trial with an external pulse generator to assess therapeutic efficacy and adverse effects.
The European Federation of Neurological Societies (EFNS) found spinal cord stimulation to be efficacious in failed back surgery syndrome and complex regional pain syndrome type 1.